<template>
  <div id="app">
    <!-- <div id="nav">
      <router-link to="/">Home</router-link> |
      <router-link to="/about">About</router-link>
    </div> -->
    <router-view />
    <van-tabbar route v-show="isShow">
      <van-tabbar-item icon="home-o" replace to="/">首页</van-tabbar-item>
      <van-tabbar-item icon="wap-nav" replace to="/about">分类</van-tabbar-item>
      <van-tabbar-item icon="cart" replace to="/cart">购物车</van-tabbar-item>
      <van-tabbar-item icon="manager" replace to="/user">我的</van-tabbar-item>
    </van-tabbar>
  </div>
</template>
<script>
export default {
  data(){
    return {
       isShow: true, // 是否显示tabBar
    }
  },
  watch:{
    $route:{
      handler(newVal){
        // console.log(newVal);
        // console.log(oldVal);
        if(newVal.path == '/' || newVal.path == '/cart' || newVal.path == '/user' || newVal.path == '/about'){
          this.isShow = true;
        } else {
          this.isShow = false
        }
      },
      deep:true
    }
  }
}
</script>





<style lang="scss">
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
}

#nav {
  padding: 30px;

  a {
    font-weight: bold;
    color: #2c3e50;

    &.router-link-exact-active {
      color: #42b983;
    }
  }
}
</style>
